IOS之云端应用

syxChina

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10.1 GET请求
10.2 XML解析
10.3 JSON解析
10.4 POST请求

10.1 GET请求

通过一个第三方提供的云服务，查询IP归属地：http://www.youdao.com/smartresult-xml/search.s?type=ip&q=218.241.121.186
它的返回格式是xml :

新建个例子：CSSimpleXML，设计原型：

编辑按钮事件：
<div class="cnblogs_code">- (IBAction)query:(id)sender {    NSString* strUrl = [NSString stringWithFormat:@"http://www.youdao.com/smartresult-xml/search.s?type=ip&q=%@", ipText.text];    NSURL* url = [NSURL URLWithString:strUrl];        NSURLRequest* request = [[NSURLRequest alloc]initWithURL:url];        NSURLConnection* connection = [[NSURLConnection alloc]initWithRequest:request delegate:self];        [connection release];    [request release];    [activityIndicator startAnimating];}